build(deps): bump react-dom from 16.13.1 to 16.14.0 in /docs

Bumps [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) from 16.13.1 to 16.14.0.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v16.14.0/packages/react-dom)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

docs/package-lock.json

@@ -43,7 +43,7 @@
     "prop-types": "^15.7.2",
     "puppeteer": "^5.5.0",
     "react": "^16.14.0",
-    "react-dom": "^16.12.0",
+    "react-dom": "^16.14.0",
     "react-headroom": "^3.0.1",
     "react-helmet": "^6.1.0",
     "react-icons": "^3.11.0",